Another possible benefit of wearing masks

[M_T]

I'll wait and see.  But think of this in regards to winter-time outbreaks (in dry indoor air)
"Researchers propose that humidity from masks may lessen severity of COVID-19"

“We found that face masks strongly increase the humidity in inhaled air and propose that the resulting hydration of the respiratory tract could be responsible for the documented finding that links lower COVID-19 disease severity to wearing a mask,”

[cardcrimson]

Makes sense, increased humidity also makes natural deactivators such as hydroxyl radicals, ozone, and ions more effective against the virus in the atmosphere, and I'd imagine that would include what's heading into your lungs.